CLINICAL PARAMETERS AND MILK YIELD OF F2 LINE EWES

Abstract

In the research, clinical parameters and milk yield of F2 line ewes of ¾ Hisar and ¼ Jaydari breeds are presented. In this case, it was found that the clinical parameters of the F2 line ewes are at the physiological standard level according to the seasons of the year. In the researches, it was found that the milk yield of second line crossbred ewes of Hisar and Jaydari breeds was equal to 44.9 kg, which was 3.6 kg or 8.7% (P>0.95) higher than that of their pure Jaydari breed peers. Therefore, at the age of 21 days, the absolute weight of crossbred lambs was 8.98 kg, which was 0.72 kg (P>0.95) higher than that of purebred Jaydari lambs. This means that the ewes are high in milk yield, and the daily extra weight gain and high growth rate of the
crossbred lambs born from the breeding of these sheep "in-breeding", expands the possibilities of replenishing the flock with young animals and is considered important, determines high efficiency in sheep farming. These data indicate that the ewes are healthy in all groups, and the metabolic processes in their bodies are almost the same, and as a result, the ewes have a high milk yield.